Surface scattering and band gaps in rough waveguides and nanowires
Abstract
The boundaries of waveguides and nanowires have drastic influence on their coherent scattering properties. Designing the boundary profile is thus a promising approach for transmission and band-gap engineering with many applications. By performing an experimental study of microwave transmission through rough waveguides we demonstrate that a recently proposed surface scattering theory can be employed to predict the measured transmission properties from the boundary profiles and vice versa. A new key ingredient of this theory is a scattering mechanism which depends on the squared gradient of the surface profiles. We demonstrate the non-trivial effects of this scattering mechanism by detailed mode-resolved microwave measurements and numerical simulations.
Keywords
Cite
@article{arxiv.1205.3646,
title = {Surface scattering and band gaps in rough waveguides and nanowires},
author = {O. Dietz and H. -J. Stöckmann and U. Kuhl and F. M. Izrailev and N. M. Makarov and J. Doppler and F. Libisch and S. Rotter},
journal= {arXiv preprint arXiv:1205.3646},
year = {2012}
}
Comments
5 pages 4 figures